Abstract
The results of a hydrological survey of the Karamea Bight, on the west coast of the South Island, are presented and discussed. The hydrology of the region was dominated by the Westland Current, the river outflow and wind‐induced upwelling. The existence of a southwards flowing undercurrent associated with the upwelling is postulated at 150 m depth over the continental slope, and the name of Westland Undercurrent is proposed for this feature.